亚、跨、超音速及不可压流动的数值分析方法的研究  

Numerical simulation of compressible and incompressible flows

作　　者：赵兴艳[1] 苏莫明[2] 苗永淼[1] 

机构地区：[1]西安交通大学,西安710049 [2]西北工业大学,西安710072

出　　处：《计算力学学报》2001年第4期397-401,共5页Chinese Journal of Computational Mechanics

摘　　要：为了对亚、跨、超音速及不可压无粘流动进行数值模拟 ,将 L U- SGS方法与预处理方法结合 ,给出了 PL U- SGS方法。方程离散基于有限体积法 ,采用高阶精度 AUSMPW格式。方程求解采用了特征边界条件。通过典型算例的数值试验对比分析 ,表明 PL U- SGS方法可以有效地对亚、跨、超音速及不可压流动进行数值模拟 。A computational method is developed in order to calculate compressible and incompressible flows by using implicit time marching method. The equations are preconditioned to permit solution of both compressible and incompressible flows. A cell based finite volume discretization is used in conjunction with AUSMPW scheme. Characteristic boundary conditions based on the eigen system of the preconditioned equations are employed. Computational capabilities are demonstrated through computation of a wide variety of problems. Comparison of the calculations with available numerical data shows that the method is accurate, self-adaptive and stable for a wide range of Mach numbers.

关 键 词：亚音速流动 跨音速流动 不可压无粘流动 超音速流动 PLU-SGS方法 计算流体力学 隐式时间推进法 有限体积法 

分 类 号：O354[理学—流体力学] O357.1[理学—力学]